4 Pack Black Universal Control Knobs with 12 Adapters For Oven/Stove/Range 6/8mm D Hole Replacement Compatible with for Knob About this item Adapter Size: there are 12 pieces adapters in 2 different styles, 4 long and 8 short; The inner diameter of the short adapter measures approx. 6 mm/ 0.24 inch and the height is 14 mm/ 0.55 inch; The inner diameter of the long adapter measures approx. 8 mm/ 0.31 inch and the height is 26 mm/ 1.02 inch; Convenient for your installation and daily usage; please check carefully whether the dimensions in Figure 3 match Knob Size: comes with 4 pieces same size control knobs; And the control knob's outer diameter measures approx. 1.54 inch/ 39 mm; The inner diameter of knob approx. 0.43 inch/ 11 mm; Please make sure the insert size (0.43 inch/ 11 mm inner diameter) is suitable for your machine before purchasing, please check carefully against the dimensions in Figure 2 D posts inside hole: "D" Post inside diameter are available in 2 sizes, 1/4" (6 mm) and 1/3" (8 mm). The size of your stove or oven axis should match the "D" column on the inner diameter of our control knob, and you can only use it in this case; please double check the size match before buying Durable materail: our control knobs made of quality material ABS plastic, these knobs and adapters have been well inspected and test by manufacturer; Please note: before buying, please confirm whether the plastic knob is what you need Work with: works with many stove, range and oven, great for RVs, campers, camping appliances, etc. But not all s and models are universal, not suitable for barbecues or heaters Package List 1 Set x Control Knobs _x000D_